The Aerelle range is designed to provide a premier quality duvet with real benefits in sleep, comfort and durability. The duvet offers excellent warmth insulation and is over 10% lighter in weight than standard hollowfibre duvets. The Aerelle by Du-Pont filling is a special microfine (3.0 DTex) polyester hollowfibre with a siliconised finish, creating a duvet which is exceptionally soft and a pleasure to sleep under. The duvet comes encased in a sumptuously soft pure cotton casing, and offers non-allergenic properties for extra comfort and a superior night's sleep. The 13.5 tog is ideal for keeping you warm through the cooler winter weather.